Fastener for mower guard-fingers



R. C. HARRIS.

FASTENER FOR MOWER GUARD FINGERS.

APPLICATION FILED MAY 27, I920.

Patented Oct. 26, 1920.

5250M! UNI ENTOR.

BY v IZWNEW" RICHARD C. EAR/31S, 0F FALLONI, NEVADA..

FASTENER FOR MOWER GILAgD-FINZGERS.

Specification of Letters Patent.

Patented Oct. 26, 1920.

Application filed May 27, 1920. Serial No. 384,669.

T 0 all whom it may concern.

Be it known that I, RICHARD C. HARRIS, a citizen of the UnitedStates,residing at Fallon, in the county of Churchill and State ofNevada, have invented certain new and useful Improvements in Fastenersfor Mower Guard-Fingers, of which the following i a specification.

This invention relates to guard fingers and finger bars for mowers andhas special reference to the means for fastening the guard finger to thefinger bar, the object ofthe invention being to provide a fasteningdevice which will be strong, easily manipulated, inexpensive and of suchform as to offer no obstruction to the movement of the cutter bar. Theinvention is illus trated in the accompanying drawing and resides incertain novel features which will be particularly pointed out in theclaims following a detailed description.

In the drawings- Figure 1 is a plan view of a guard fin ger and aportion of the finger bar with my improved fastening device appliedthereto;

Fig. 2 is a view partly inside elevation and partly in vertical section;

Fig. 3 is a perspective view showing the parts of the fastening deviceseparated but approximately in their proper relative positions;

Fig. 4 is an enlarged horizontal section through the fastening device.

The guard finger 1 may be of any wellknown or preferred form and thefinger bar 2 is a fiat bar of metal to the under side of which the rearend 3 of the guard finger may fit closely, as shown in Fig. 2. In mypresent invention, the finger bar 2 is provided with an opening 4 whichextends vertically through the bar and has its upper portion flared, asclearly shown in Fig. 2. Upon the upper side of the rear end extension 3of the guard finger is a stud or projection 5 which, in the illustratedembodiment of the invention, is furnished by the upper end of a rivetinserted through the end of the guard finger. This stud or pro jection 5is cylindrical in form and its extremity lies in the horizontal plane ofthe finger bar 2 so that in the completed device these surfaces will beflush. In the projection 5, I form annular grooves 6 and 1ongitudinalnotches or grooves 7 leading into the said annular grooves. A cap or nut8 is provided to fit within the opening or re cess 4 around theprojection 5 and this cap has its under side or lower end beveled, asshown at 9, whereby to fit upon the flared surface of the opening 4. Inthe bore of the cap or nut 8, I provide lugs or proections 10 which arespaced apart a distance equal to the spacing of the grooves or notches 7and the annular grooves 6 so that the lugs may be caused to move throughthe notches into engagement with the annular grooves whereupon the nutor cap may be slightly turned so that the engagement of the lugs withinthe annular grooves will prevent the cap rising from the stud.Preferably the lugs 10 are provided in pairs disposed at diametricallyopposite points of the bore of the cap so that the holding strain towhich the cap is subjected will be distributed and more effectuallyresisted.

It will be readily seen from the foregoing description, taken inconnection with the accompanying drawings, that I have provided anexceedingly simple means for se curing a guard finger to a finger barwhere'- by the parts will be securely held together and there will benothing projecting above the upper surface of the finger bar tointerfere with the movement of the cutter bar. The flared form of theopening 4; and the beveled form of the cap or nut permit these parts tofirmly engage and the nut or cap may be brought into its operativeengagement with the stud very quickly and without the use of anyparticular tools. It will be noted that the mutilation of the finger baris very slight compared with other fastenings which are in general useso that the strength of the finger bar is maintained and owing to thesmall number of parts required and the simplicity of their constructionthe cost of the device is very low.

Having thus described the invention, what is claimed as new is:

The combination with a guard finger, and a finger bar extending acrossthe rear end of the guard finger and provided with an opening extendingvertically therethrough, of a projection rising from the rear end of theguard finger through said opening in the finger bar and provided with anannular groove and a longitudinal groove intersecting said annulargroove, and a cap seating Within the opening in the finger bar andengaging around the projec tion and provided in its bore with a lugadapted to pass through the longitudinal groove of the projection intoengagement with the annular groove therein whereby to hold the guardfinger to the finger bar, the upper surface of said cap and the eX- 10tremity of the said projection being flush with the upper surface of thefinger bar.

In testimony whereof I aflix my signature.

RICHARD C. HARRIS. [LS-1

